Junit test cases for REST API - rest

I need to write a junit test case for REST API.Am new to Junit test case can anyone help me to understand and write the test cases for REST APIs with so many EJB injections.
Do i need to call the actual api end point while writing the test cases or can i mock a server to achieve the junit test cases for APIs.
junit test cases must display the code coverage, how can we achieve this.
Note: REST Application is NOT a spring based application.

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Test Suite/Project level assertions on SOAP

I have different test suites created in SOAP and i want to add common assertions to test suites level so that i can change/update it easily.
Any solution on this..? Please help

Scala Play REST API test with external server

We have an API built with play/scala and writing sample end to end API tests. We don't want to start any embedded servers. At the moment, the application is started and an external test suite (written in a different javascript framework) makes requests and tests responses. We would like to convert these tests to scala tests but would like to keep the same process, i.e. no embedded servers but calling external REST endpoints. What is the best way to write these tests in scala? Any libraries recommended or samples that I can take a look at?

Best way to implement REST API testing with Nightwatch.js

I'm using Nightwatch-Cucumber that based on Nightwatch.js. And I want to integrate REST API tests in my Nightwatch framework. Currently I only have End2End tests based on Selenium, but in future I want to have both test types in one framework to make it also possible to use the End2End tests and the REST API tests in harmony within one Cucumber test. So, I want to combine both tests.
What is the best and smartest way to implement such REST API tests in my test framework based on Nightwatch-Cucumber? I've tried some stuff with frisby.js, but this framework uses Jasmine and Jest and it's not a good idea to use it in combination with Nightwatch and Cucumber.
Any recommendations?
You can use request-promise.
In nearest future, new version of nightwatch-cucumber will work with Jasmine and Jest too.

Rest Assured vs Cucumber

I know what Rest Assured is and for what purpose it is used and the same for the cucumber.
But the thing is what we can achieve with Rest Assured, we can also do with Cucumber for testing.
Rest Assured simply calls the web service and validates the response. We can't use Rest Assured during the Maven build because the service needs to be up and running.
But with Cucumber I can directly call the web service's business service layer and DOA layer and validate the response. Cucumber can invoke this at Maven build time.
So question is which one is better? I know we can use/integrate Cucumber with Rest Assured but.
Cucumber is a BDD tool and can be used to describe the expected behavior and use those descriptions as the basis for test automation.
RestAsured is a tool to test API's/http calls.
They do something different.
You could use them both: Cucumber to describe you functionality, and RestAssured to do http calls.
But with Cucumber i can directly call the web service's business service layer and doa layer and validate the response.
This is not necessarily true, and it has to do with the test level you want to achieve.
So if you just want to do tests on a unit level, then yes, you don't need to use REST assured, you can perfectly specify your tests with Cucumber feature files, and in the step definitions, you can test the service layer and the DOA layer directly, like you mentioned.
If you want to test a running instance of the webservice then you can use REST Assured or REST Assured plus Cucumber. REST Assured will only help you simplify the actual definition of each part of the test and the interactions with endpoints and its expectations, and Cucumber will allow you to define the high-level scenarios made of those steps.
So the question is which one is better? I knew we can use integrate cucumber with rest assured but.
All in all, it's not a matter of which one is better, but what level of testing you're trying to achieve and how you want to achieve it. A unit level you might not need REST assured. On an integration/live-execution level, then yes, you can use that library. In both levels, you can specify your tests using Cucumber.
Rest assured is java Api libraries to do automate REST web services. we can automated Rest apis by using BDD method,BDD is method and Cucumber is leading and free tool for that
Rest assured is not a tool it is a java library which we can use for test restful webservices, and yes cucumber is recommended to use because customer is giving better reporting which rest assured is not supporting to reports.
So I can recommend use cucumber framework to test API

how to use rest-assured for integration tests on my WS without modyfing database state?

I'm currently developping a REST Web service with Spring MVC.
And I am struggling to find the best way to do integration tests on my WS.
First solution : using rest-assured
Advantage : fluent api, really easy to use with its cool DSL
Drawback : when i perform POST or PUT requests on my WS, the state of my database is modified, and next tests are corrupted.
Second solution : unit test the controllers and perform integration tests at the service level separately
Advantage : i can control the state of my database, using Spring Test Framework and perform rollback after each test
Disadvantage : i do not perform end-to-end integration tests anymore.
Question : how can i use rest-assured to do integration tests without modifying the state of my database ?
Thanks a lot.
Why don't you delete the rest assured doubles and redirects before every test and set them up fresh for the test?
RestClient.delete "#{RestAssured::Server.address}/redirects/all"
RestClient.delete "#{RestAssured::Server.address}/doubles/all"
Or alternatively you can use different doubles for the GET and POST/PUT calls to the rest assured and use the redirects in between these calls.
I am not sure, your request makes sense as you state it.
RestAssured is just a framework to support you with testing. You can also write unit tests, that do the equivalent of PUT and DELETE (basically the internal implementations), which then modify the database state.
Or you can only issue HEAD and GET requests with RestAssured and not modify the database state by this.
Both of the options will only test parts of the code path if you leave any updates out, so your issue is orthogonal to the selection of RestAssured or hand written unit tests.
Of course you can mock your backend away, but either the mocks are trivial and you don't gain any insight. Or they are complex and you will need separate tests to assure that the mock objects to what you think they are doing.
In order to perform integration tests on a REST Spring MVC Web Service, the SpringSource team has provided a new library called spring-test-mvc, which is now integrate to spring-test.
http://blog.springsource.org/2012/11/12/spring-framework-3-2-rc1-spring-mvc-test-framework/
For my special purpose, it is more adapted than Rest-Assured.